Exit Signs Key Product Criteria
||Operates on 5 watts or less per sign.
|Table 1: Product Specifications
For ENERGY STAR Qualified Exit Signs (Version 3.0)
|Input power demand
||5 watts or less per sign
|Power factor (for electrically-powered, internally-illuminated signs only)
||Any leading power factor is satisfactory. A lagging power factor not less than 0.7 is satisfactory.
|Manufacturer warranty for defects in materials and manufacturing
||Replacement of defective parts for 5 years from date of purchase
||Listed in accordance with UL 924
- Exit Sign:
- A sign that is permanently fixed in place and used to identify a means of egress. For the purposes of ENERGY STAR, an exit sign must have an illuminated, legally-required legend. Exit signs that are required by section 7.10.4 of the Life Safety Code to remain illuminated via an emergency power source upon failure of the normal power supply must be designed to comply with this requirement.
- Legally Required Legend:
- The words “EXIT”, “TO EXIT”, “STAIR”, “TO STAIR”, “STAIRS”, “TO STAIRS”, “FIRE ESCAPE”, “TO FIRE ESCAPE”, “FIRE EXIT”, and “TO FIRE EXIT”. This definition will also encompass other combinations of letters and symbols if and when these signs may be listed in accordance with UL 924.
- Exit Sign Model:
- For the purposes of ENERGY STAR, an exit sign model is an exit sign in the configuration that is actually packaged and sold to end users under a unique model number or name. For exit sign models with an individual rechargeable battery, the battery charger shall be included as part of the exit sign model and shall be tested and qualified as a single product.
- Input Power Demand:
- The amount of active power required to continuously illuminate an exit sign model, measured in watts (W). For exit sign models with rechargeable batteries, input power demand shall be measured with batteries at full charge.
- Power Factor:
- A measurement that determines how effectively power drawn by the equipment is converted into actual usable power by an electric component. Power Factor is the ratio between active (useful) power, measured in watts, and apparent power, measured in volt-amperes.
- Lagging Power Factor:
- With an inductive load, the current lags the applied voltage in a clockwise direction represented on a vector diagram, and is said to be a lagging power factor.
- Leading Power Factor:
- With a capacitive load, the current leads the applied voltage in a clockwise direction represented on a vector diagram, and is said to be a leading power factor.
- NFPA 101, Life Safety Code:
- The National Fire Protection Association (United States) (NFPA) develops NFPA 101, Life Safety Code. The Code addresses those construction, protection, and occupancy features necessary to minimize danger to life from fire, including smoke, fumes, or panic. Many states and localities adopt this Life Safety Code into their own Building Code standards.
- Nationally Recognized Testing Laboratory Program, which is a part of OSHA’s Directorate of Technical Support.
- Occupational Safety & Health Administration.
- UL 924:
- The Standard for Safety for Emergency Lighting and Power Equipment, developed by Underwriters Laboratories.